Concrete-form



Patented D60. 20, 1921.

2 SHEETS-SHEET l.

INVENTOR. Ira .z'hue I. J. KUERT.

CONCRETE FORM.

APPLICATION FILED MAYH', 1920.

Patented Dec. 20, 1921.

2 SHEETS-SHEET 2.

INVENTOR. Ira .7. Hue/"1' ATTOR EYs IRA J. KUERL, DE LOS ANGELES, CALIFORNIA.

CONCRETEIFORM.

Application filed. May 11, 1320.

T0 (ZZZ whom it may concern Be it known that I, IRA J. Korea, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Concrete-Forms, of which the following is a specification.

This invention is a concrete form and has for its object the provision of a form construction which may be readily assembled and as readily taken apart and which comprises units which may be arranged to form a form of any required size and shape.

The invention will be readily understood from the following description of the accompanying drawings, in which Figure 1 is a perspective view of a concrete form constructed in accordance with the invention.

Fig. 2 is a side elevation of a portion of a form, partly broken away.

Fig. 8 is a longitudinal section on the line 33 of Fig. 2.

Fig. 4: is a top plan view of a corner of the form construction.

Fig. 5 is a top plan view of a portion of a form arranged to form a bay window.

Fig. 6 is a side elevation of a detail of the form construction.

Fig. 7 is a plan view of a portion of the concrete form at the connection between a side wall and a cross partition.

The improved concrete form consists of a skeleton frame, preferably, of metallic channel bars arranged to support the side walls of the form, said side walls, preferably being formed of a series of wooden planks.

The form is constructed with or without a suitable foundation 1 and comprises essentially upright channel bars 2 and cross pairs of channel bars 3 and 4 having their channels turned up and down respectively, whereby planks 5 may be supported in upright position with the lower end of a plank received in the channel bar 3 of one of the cross pairs of channel bars, and the upper end of the plank supported in the channel of channel bar 4: of the next upper pair of channel bars 34-.

The uprights 2 may be of any desired length so that the form construction may be arranged to form walls of any desired height, and when the concrete walls are to be extended to a height greater than a height to which it is practical to extend one series Patented Dec. 2(1 1221.

Serial No. 380,490.

of uprights 2, to the height of the concrete form and the form then reassembled upon the top of the walls thus constructed so that the walls may then be extended to a greater height. This method may be repeated as many times as is found necessary.

The uprights 2, preferably, extend upwardly from the outside of foundation 1 when a foundation is employed and may be secured to said foundation by cross bolts 7. A. spacer block 8 is, preferably, provided between the foundation and each of the up rights 2 so that the uprights will extend upwardly in a plane outside of the plane of the side of the foundation. By this construction the pair of cross channel irons 3 and at at the outside of the wall to be constructed upon the foundation may be secured to the uprights so as to be positioned outside of the plane of the outer side of the foundation whereby the wall to be constructed may be formed flush with said outer surface of the foundation.

The cross pairs of channel irons 3 and a are made in different lengths so that by proper assembling of said channel bars a form of any desired length may be constructed. The joints between sections of one of the channel bars are, preferably, staggered with relation to the joints between sections of the other channel bar, and the two channel bars of a pair of cross channel bars as thus constructed, are provided with connecting means, preferably, arranged adjacent the staggered joints of the sections of the channel bars. As an instance of this arrangement the bases of the respective channel bars may be provided with elongated slots 12 positioned along said bases, and bolts 10 may be arranged to connect the bases of the two channel bars arranged base to base, as previously described, these bolts extending through the slots in the bases of the respective channel bars, preferably, adjacent the ends of the respective sections of a channel bar. The heads of the bolts are arranged to abut against the walls of one of the bases at the sides of slots 12, and the op posite ends of the bolts are provided with nuts 11 received against the base of the opposite channel bar.

Pairs of cross channel bars are arranged upon the foundation 1 at the inner and outer sides thereof so as to form a space between the wall may first be formed the same in which the concrete wall is formed, the cross channel bars at the outside of the foundation having their inner flanges, preferably, flush with the outside of the foundation, as previously described, and the cross channel bars at the inner side of the foundation, preferably, having their outer flanges flush with the outside of the foundation, so that the wall formed between the pairs of cross channel bars will have its inner surface inside of the plane of the inner wall of the foundation a distance equal to the width of the inner cross channel bars to provide a suitable ledge 15 at the base of the concrete wall upon which the floor beams are arranged to rest.

Bolts 1.6 are arranged to connect the inner and outer pairs of cross channel bars, said bolts, preferably, extending through elongated slots 17 in the uprights 2, so that the cross channel bars may be adjusted up and down relative to the uprights. The bolts 16 are, preferably, arranged so as to be received in the spaces between the ihannel bars 3 and 1 of the inner and outer pairs,

the ends of the bolts extending beyond the pairs of cross channel bars being provided with nuts 18 whereby the inner and outer pairs of cross channel bars may be connected. Spacer blocks 20 are, preferably, arranged between the inner and outer pairs of cross bars to hold the latter in their adjusted spaced relation. These spacer blocks are, preferably, of concrete and may be embedded in the finished concrete wall.

The series of inner and outer cross channel bars thus constructed upon the foundaprovided with corner irons 22, preferably,

positioned at the outside of the outer pairs of cross channel bars, said corner irons being suitably bolted to the channel bars forming the corner as by bolts 23.

The skeleton frame of the concrete form, as thus constructed, may be of any desired shape and may include any desired number of cross partitions and. the like. Thus for example, the foundation of the construction may include a cross partition 25 upon which is mounted pairs of inner and outer channel bars secured to uprights 2, as previously described. In this construction the uprights 2 are, preferably, flush with one of the sides of the foundation of the partition, and the spaced pairs of cross bars are, preferably, both arranged within the planes of the sides of the foundation so as to provide ledges for floor beams.

The inner pair of cross channel bars of the side wall at the connection with a cross partition have their sections spaced apart as shown at 27 whereby the wall of the partition and the side wall will be poured as an integral structure.

In order that the planks 5 may be positioned between the cross channel bars of superimposed series of said cross channel bars so as to form spaced walls between which concrete may be poured to form the walls of the building construction, the upper channel bar of the lower series of; cr0ss channel bars, which is arranged to support the lower ends of the planks 5, is, preferably, provided with an outer flange of reduced width, as shown at 30, and the planks 5 are slightly shorter than the space between the bases of the channel bars arranged to receive the opposite ends of the planks.

By this arrangement it will be seen that the planks 5 may be slid into the channel of the channel bar having flanges of equal widths until the end of the plank abuts against the base of the channel bar, and when in this position the opposite end of the plank will move past the flange of reduced width provided upon the channel bar at said lower end of the plank. By this arrangement the planks may be alined with'the channels of the respective channel bars, and the planks being then lowered so as to rest upon the base of channel bar 3 at their lower ends, will be securely held in position. The planks are arranged side by side so as to form closed spaced walls forming the forms into which the concrete may be poured. The space between channel bars 3 and t of a pair of cross bars may be closed by a strip 15, preferably of wood, receive-d in said space between the bases of channel bars 3 and l and extending the length of said space with bolts 10 and 16, which extend through this space, being received through suitable apertures in the strip.

The construction as thus described-provides a skeleton for a concrete formwhich may be formed of any desired shape and to any desired height, as many of the series of cross channel bars 3 and 4 being arranged in superimposed relation upon uprights 2 as may be found desirable, it being understood that the channel bar 3 of each of the pairs of cross channel bars 3 and 4: is provided with a flange 30 of reduced width so that succeeding superimposed series of planks 5 may be supported at their ends in the chan nels of channel bars 3 and a of superimposed series of pairs of cross channel bars.

It will be understood that the form as thus constructed may be arranged to receive door or window frames or the like so that the concrete when poured into the form will form walls around said door or window' frames. An instance of this arrangement is shown a door frame 40 received between the inner and outer pairs of cross channel bars and extending upwardly to a suitable height.

\Vhile in the illustration and description of the invention, as thus set forth, I have shown certain practical embodiments of the invention, it will be apparent that a concrete form constructed in accordance with the invention may be of various shapes and include various constructions incident to the particular buildingconstruction which is to be formed. Thus for example, the improved form may be employed for building curved walls as well as straight walls by providing suitably curved cross pairs of channel bars. Furthermore, it will be understood that the pairs of cross channel bars of superimposed series may be angularly arranged in a vertical plane relative to one another so that walls of sloping type may be formed. It will be also understood that the spacer blocks arranged between the inner and outer pairs of cross channel bars may be of any desired length so as to form Walls of any desired width, and the spacer blocks in one portion of the form may be of different width from the spacer blocks in a different superimposed portion of the form so as to form vertical walls varying in width at different heights.

Furthermore, it will be understood that the blocks spacing the uprights from the foundation may be of varying width when forming portions of a wall at different heights. By this arrangement the outer surfaces of the walls formed in the form may be laterally off-set at different heights of the wall. It will also be understood that the provision of blocks between the uprights and the foundation of tapering width will enable the uprights to be accurately positioned in exactly vertical position if the sides of the foundation supporting the uprights should not be absolutely vertical. The use of channel bar construction in the uprights 2 and for the cross pairs of channel bars provides a construction in which the necessary strength is imparted to any form to withstand both lateral and longitudinal stress. Furthermore, it will be observed that the provision of cross channel bars arranged base to base provides strengthening means against stress in opposite directions. The provision of this strengthened construction in a concrete form as well as the use of a steel skeleton construction will provide a form which will not be subject to lateral bulging of the walls of the form, and the form thereby provides means for constructing accurately vertically alined walls. Furthermore, it will be observed that the skeleton construction of any cross partitions which may be provided in the form will also tend to strengthen the entire structure of the form.

It will be observed that the use of relatively narrow planks for forming the side walls of the form permits of the ready removal of any one or more of said boards to provide a space through which maybe inserted reinforcing members to be embedded in the concrete or in conduits for electric wires or other uses.

Various changes may be made without departing from the spirit of the invention as claimed.

What is claimed is:

1. In a concrete form, the combination with uprights, of horizontally disposed frames connected to and supported by said uprights, each of said frames comprising two pairs of spaced channels, the members of each pair of channels being arranged back to back with the flanges vertically disposed, and one flange of the upper members of said pairs of channels being narrower than the other flange in order to permit the ready insertion or removal of panel members.

2. In concrete form construction, the combination with uprights horizontally disposed, of frames supported by said uprights, each of said frames comprising pairs of spaced connected channels, the channels of each pair being disposed back to back with the flanges vertically arranged, spacing members disposed between the pairs of channels and located adjacent to the upright supporting members, and panels arranged between the flanges of the channels to form walls between which self hardening plastic material may be poured.

3. A concrete form comprising a skeleton frame consisting of uprights and pairs of channel bars arranged base to base and secured to said uprights with the channels of said bars turned up and eral relation and in. spaced superimposed series, one of the flanges of the upturned channel bars of each pair being of reduced width, and planks supported at their ends in the channels of channel bars of superimposed series and arranged to form spaced walls between which concrete may be poured, said planks being of a length to be moved past the flange of reduced width upon said channel bars.

4. A concrete form comprising a skeleton frame consisting of channel bars having their channels turned toward one another and arranged in spaced superimposed relation, one of the flanges of the lower channel bar being of reduced width, and planks arranged to form a wall between said superimposed channel bars, said planks being of such length as to move past said flange of reduced width when the opposite ends of said planks are positioned within the channel of the upper channel bar, and to be supported against lateral displacement by the flanges down, said pairs of channel bars being arranged in spaced latarranged base to base being staggered with relation to the meeting ends of the sections of the other of said channel bars, and supporting connections at said meeting ends connecting said channel bars arranged base to base and arranged to adjustably space said channel bars relative to one another.

In testimony whereof I have signed my name to this specification.

IRA J. KUERT. 

